HDMI (High-Definition Multimedia Interface)
What is HDMI?• Background
Info• Review
Terminology• Explain Operation
• Advantages
Background InformationAnalog Television:
•Traditional•NTSC
•“NOISE”•Higher Bandwidth
Background InformationDigital Televison:
•Developed: Early 90s•Feb 17, 2009
•ATSC•LOWER BANDWIDTH=
BETTER PICTURE & SOUNDQUALITY
HDTV (High Definition Television)
HDTV:•DTV @
low bandwidth frees
space for HDTV•ATSC
•Resolution
•720p/ 1080i/ 1080p
TerminologyTerminology
• Analog TV – encoded A/V information transmitted via analog signal; function of amplitude & frequency
• Digital TV – developed in 1990s, allows for better quality TV & more programming choices
• HDTV – Broadcast at higher resolution (720p or higher)
TerminologyTerminology
• Resolution – measures an images detail in pixels
• Bandwidth – aka bit rate, measures how much data can be transmitted over a medium
• I “Interlaced” – odd & even lines in frame drawn alternately
• P “Progressive” – all lines in frame drawn in sequence; requires higher bandwidth
HDMI: What is it?
A compact A/V connector interface for transmitting
uncompressed digital streams
The physical cable which connects an A/V source (i.e. Blu-Ray Disc Player, Set Top
Box) with a monitor (i.e. television).
Steps to Attaining High Definition
1. Purchase a television that is HD ready, meaning television capable of achieving a 1080p or FULL HD resolution.
2. Purchase the High Definition service from your cable provider
3. Connect television/monitor to cable converter box using HDMI cable.
Alternatives to HDMI cablesConnector Interface
Picture Signal Description
HDMI Digital Fully digital. A/V data uncompressed. High Bandwidth. High Resolution (1080p). Single Cable. Effective over sixty feet. Multi-Channel Audio
Coaxial Cable
Analog Widely used by TV providers. Consistent with NSTC standards. High bandwidth. Minimal Quality. Subject to interference.
Component Video
Analog Carries Video Info as 3 separate higher-quality signals. Does not carry audio. Separation reduces interferences. Full HD capable, but not supported by many TVs.
Composite Video
Analog Carries video info as a single lower-quality signal. Subject to noise; unwanted bandwidth fluctuation/interference.
S-Video Analog Carries video data on two separate signals. Capable of 480i or 576i resolution. Does not carry audio. Operates at lower bandwidth. 4 to 9 pin connector interface.
PROTOCOL / SPECS• TMDS
• 8b/10b encoding• Differential signaling• Video Data Period• Data Island Period• Control Period• Consumer Electronic Channel (CEC)
ANY QUESTIONS?